feat: add Betas support for Anthropic provider options#151
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taigrr wants to merge 1 commit intocharmbracelet:mainfrom
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feat: add Betas support for Anthropic provider options#151taigrr wants to merge 1 commit intocharmbracelet:mainfrom
taigrr wants to merge 1 commit intocharmbracelet:mainfrom
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Adds a Betas field to ProviderOptions that allows specifying beta features to enable via the anthropic-beta header. This is needed for features like the 1M context window on AWS Bedrock (context-1m-2025-08-07). The betas are passed as request options via option.WithHeaderAdd() and the bedrock middleware in the SDK automatically moves these headers into the anthropic_beta JSON body field. 🐊 Generated with Crush Assisted-by: AWS Claude Opus 4.5 via Crush <crush@charm.land>
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Summary
Betasfield toProviderOptionsfor specifying beta features via theanthropic-betaheadercontext-1m-2025-08-07)option.WithHeaderAdd()and the bedrock middleware automatically moves them into theanthropic_betaJSON body fieldRelated PRs
Test plan
go build ./...passesgo test ./providers/anthropic/...passes